*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,body{
    width:100%;
    height: 100%;
    overflow-x: hidden;
    font-family: "微软雅黑";
    font-size:50px;
    margin:0;
    overflow-y:auto;
    -webkit-overflow-scrolling: touch;
    padding:0
}
.image{
    width: 100%;
    display: block;
}
.mommy_school_btn{
    position: fixed;
    bottom: 20px;
    width: 335px;
    height: 50px;
    background: #ff7d7d;
    color: white;
    border-radius: 10px;
    box-shadow: 0 2px 6px 0 #606060;
    font-size: 16px;
    text-align: center;
    line-height: 50px;
    left: calc((100% - 335px) / 2);
}
